Photo-electric sound-transforming device



, Jan. 20, 1931. sTEURER 1,789,607

PHOTO ELECTRIC SOUND TRANSFORMING DEVICE Filed Jan. 4, 1930 5 Shts-Shoet 1 i 9 1 mlfillillltunnmmn 52 INVENTOR Q I A1TORNEY Jan. 20,1 1931.

5 Sheets-Sheet I Fil ed Jan. 4, i930 ATTORNEY I .1. H. STEURER 1,789,607 PHOTO ELECTRIC SOUND TRANSFORMING DEVICE Jan. 20, 1931.

Filed Jan. 4, 19:50 5 Sheets-Sheet I5 INVENTOR ATTORNEY Jam 20, 1931. J. H. STEURER I PHOTO ELECTRICTSOUND TRANSFORMING DEVICE 5 Sheets-Shet 4* Filed Jan. 4, 1930 INVENTOR w ,W

I I TTORNEY m BY A Jan. 20, 1931. J. H. STEURER 1,789,607

PHOTO ELECTRIC SOUND TlANSFORMING DEVICE Filed Jan. 4, 19:50 5 Shets-Sheet 5 y I |l" "ll IIHII H uh NH um W, -i| If,

ATTORNEY atented 20,1931 I Joan E. srnunnn, or, noczvrrmn cnnrnn, nnw Your:-

rnoro-nnno'rnrc SOUND-TRANSFOBMING nnvrcn Application filed January 4, 1880. Serial No. 418,492.

My invention consists in: the novel features hereinafter described, reference being had to the accompanying drawings which show one embodiment of'the invention selected by me for purposes of illustration, and the said invention is fully disclosed in the following description and claims.

The object of my-invention'is' to rovide a simple and economical apparatus w ich may be installed in any private home, school room, or other suitable place for use in connection 'with' a continuous sound recording photographic film, whereby books, plays, essays, lectures, songs, and other similar compositions capable ofbeing delivered by the human voice, as well asmusical compositions, produced by musical-instruments, and other sounds, may be recorded'upon the sound film, and may be reproduced as desired by any unskilled person without special technical knowledge,-and as simply as moving pictures may now be made by the amateur photograher and reproduced in his own home. My invention includes the apparatus hereinafter described, the process or method by which the invention is carried into effect, and the continuous sound film which I have designated as a talking book. stood that my invention while the sound films ma machine and reproduce chine, the sound films may also be prepared manufacturer havin the contemplates that be prepared on the in quantity 'by a necessary copyright authority and so (1 as- 3 merchandise, to be reproduced in the home or elsewhere, or leasedfor the same purpose, vso that the owner of one of these machines may purchase a book recorded vocally on a v 'sound film or talking book and may havethe and may l1kesame reproduced in his home,

wise hear plays, lectures, mus1c,'etc.

In the preparation of the sound as hereinafter described, a sound record is made by forming a plurality -p in the-known manner 45. of sound tracks on a stripof photographic- I and, lts rays are pro ected t film, which is subsequently deyeloped and fixed in the usual manner.

' is similar to that used for motion pictures,

except that no perforations along are required, so that the "entire wldth of t o It will be under-' by the same ma- .sounds, a

Thi l ip;

the ed es film can be utilized, and a plurality of sound tracks are formed extending alternate-- ly in opposite directions lengthwise of thefilm and occupying the entire width of the film. It is preferred to have an even number of parallel sound tracks, so that by alternately reversing'the motion of the film, the film will be left in woundcondition on the ori nal reel after use, and so rewinding 0ft 0 film at the conclusion of either recording or reproduction'isnot necessary. Owing to the fact that for reproducing ordinary like the spoken voice, music, etc,, a speed of recorded or reproduced vibrations of about 1500 to 2000 per second is suflicient.. The film than would may be made of much less length be necessary if it carried pictures. For example with a light gate of approximately 1/1000 of an inch in width an withsix parallel sound tracks'on the film, a total of from 75 to'100 feet of film per hour is all that is necessary.v Further,'as ordinary monochromatic film may be used,- the cost of the sound records is extremely also provided at 'each' end of the portion carrying the parallel sound tracks -with means for effecting the reversal of the feeding mechanism. For example, the film may be provided with suitable slots into which a movable switch operating element will en 'ter, thereby closing the circuit which effects the reversal of the feed.

The apparatus also includes means for shifting the light gate transversely with respect to the film, so as to bring it mto alignment successively with the. separate sound tracks whenever the feed 'ofthe film isreversed, so as 'to form a practically continuous operation from one sound track to the next. Where the apparatus is used for recording low lamp is focused on this light gate and is connected to the microphone in the nsual'manner, by means'of an' audio amlifyin system; 'For reprbducing, a proection amp'is' substituted for the glow lamp hrough the dev'elopied film u on a photo-electric cell, the outputof whic is passed through an audio amplifier,- through a loud spea er or telephone receiver. Where desirable, the aud o sounds,

moderate.- The film is amplifying elements of an existing radio set and the loud speaker therefor may be used for ampli purposes. includes .t e novel features of construction and combination of arts hereinafter fully described and particu arly pointed out in the claims.

. a slight modification.

1 tion.

- out of operation final sound track has been passed before the guide and light gate.

.Fig. 8 .is' a front, elevation of the same' with the 1 proved record film or ta Fig. 4 is a detail view of a portion of the apparatus showing the preferred means for regarsing the direction of movement of the Fig. 5 is a detailiview of the apparatus for varying the positionof the light gate transversely of the film.

Fig. 6 is a detail view of the limit switch for automatically throwing the apparatus when the-last portion of the light gate. Fig. 7. is an enlarged plan view of the platecarrying the light gate removed. Fig. 9 is a detail view of the removable plate carrying the light gate removed.'

Fig. 10 represents a wiring diagram of the 1 :ap aratus.

.ig. 11 is a view similar to Fig. 4 showing Fig. 12 is a partial" lan view of my im- I gbook. Fig. 13 is a similar view before soundtracks are recorded thereon.

Referring to th drawings,

e accompany 1 represents the base plate of fthemachine provided with. a .pair of vertical supports oizbearing' plates, indicated at 3, 3.

.- these bearing plates is provided with columns, 2, 2, r ends arch of a spinbearing therein, and procarrymg at their up 'dle, 4, mounted in vided'with a rotary disc, 5, the upper face of which may be. e felt or other friction the: spindle, 4,

- surrounding the P by means of a-key, indicated mg a suitable keywa'y in the tion between discs, 5 and conveniently covered with material 'above which rests. on the disc, '5, and a sleeve, 5", loosely spindle, so that a film reel, 6 maybe placed u .for rotation wi the sleeve at 7 ,for reel. 5, will slip to accommodate variations in i I of the reels, due to the varying amount of film \wound theron. The lower endof each spindle, .4, is provided witha driving mem- My invention'also tively enga 'motor is mounted Suitable means are of the blank film projects. A friction disc, 5',

-srovidedwith suitable-'1 friction on the disc, 5, and secured for example The cf.

.rmita i 27 h to speed grooves, n t eir upper portions- J mcmbers,;-28, on a 'veitic'allymovab e .29, which carries the. supher, 8 in this instance a grooved pulley, g inthis instance, able belt, 9, with a driving member or pulley 10, on a vertical driving shaft, 11, mounted in the bearing, step bearing, 1", on the base plate, 1. Each of the shafts, 11, is provided adjacent to its lower end with a worm wheel, 12, for o raa worm, 13, on the s aft, 14, of an e ectric motor, 15. p The electric to oscillate on a vertical pivot, indicated at 16, (see Fig. 4) secured to the base plate,- and the diameter of the worm, 13, is less than the worm wheels, 12, 12, so that by oscillating the motor-on its pivot, 16, it can be made to en- 3', in. the plate, 3, and a distance between the by means of a suitgage one worm wheel or the other, to reverse the feed of the film without changing the direction of rotation of the motor shaft. provided for locking the motor in operative relation with one Mother of the worm wheels, 12. In this instance the motor base is shown providedwith a part having two notches or recesses,-indicated at 17,17, Fig. 4, adapted to-be en aged by a s ring dog, 18, mounted on the n opposite sides-9f the motor, I conven- 'iently provide the solenoids, 19, 19, the movable cores, 20, of which are provided with slotted extensions,

.21, engaging 'pins, 22, on the motor base, so the other of said solenoids,.the i notor can be oscillated on its supporting pivot, 16,.to carry the worm, 1.3, from engagement with one of the worm wheels,

versal of the direction of movement'of the ass plate.

12, into engagement with the other worm wheel, to secure the reas that by energiz ng one or film, as hereina'ftermore fullyexplained,

Theactual feed of the film is secured by means of friction feed wheels, indicated at 23, 23, one of which is carried biv'the upper end of each of the drivin sha 11, each feed wheel being provide with idle. rolls, indicated at 24, 24,. for' holding the film in frictional engagement with the adjacent feed wheel, 23.1

no I 'Itw'ill be seen that the feed roller,23, which'i'sbeing activelydrivenby themotor, will draw the film from the-reel at the opposite end of the machine, andat the same time will drive the adjacent reel through the connection between its shaft, .11,

and'the reel.spindle, sofas to wind up the film on one real as it isdrawn vice versa, according to movementfof the film. The fil ake inoff. the other, and 5 'the. direction of m reels are cated at for preventing over movement of the reels" 1n 3, awell known wa' vide vertical; guides,

.26 supported by the base plate and? porting means for theglow lamp or projecv On-.opl- .positesides-pf the traveLofthelin,ilipro-. 1 5

25 I ing a projection,

difierent positions vertically, i.

and plate carrying the light gate, support for the photo-electric .cell.

the film guide and the It will beseen byfreferenceparticularly to Figs. 1, 2 and .3, that this frame, 29,v is disposed per-- tion lamp, the focusing means,

'pendicularly to the plane ofithe fihn, and l provide means for supporting it in as many e., transversely of the film as there are soundtracks on the film, in this. instance in six different vertical positions.

from the .center of shaft, 30. Adjacent to the notch, a, which is at the greatestdistance from the center, each camis provided with an outwardly extending shoulder, 33, form- 34, the opposite side of which connects with the peripheral portion of the cam adjacent to the notch, f, as best 100, the rotation of the parts carried thereby,

seen in Fig 2. The vertically removable frame, 29, is provided at each end with a friction roll, 35, to engage the adjacent cam,

..32,-.thus-supporting*theframe and permitting it to be maintained at any one of six positions, corresponding with the notches in the cams, 32, determined by the-position of the shaft, 30. As will clearly appear in Fig.

2, in which the frame-29, is shown in its and in which figure; the light gate is indicated at shaft, 30, to the right in Fig. 2,'wil1 lower the frame, 20, and the and bring the light gate successively into alignment with any one of six sound tracks, indicated in that figure at 101, 102, 103, etc., on the film indicated highest position, position of the In Fig. 5, I have shown on" means for operating the cam shaft, 30, to shift the light gate from one sound track to the other. 'As therein shown, the camshaft is provided with a ratchet wheel, 36, havingsix teeth 7 adapted to. be successively engaged by a pawl, 37, carried by a pawl arm, 38, pivotally.

' mounted on the camshaft and connected by a link,-39, with a core, 40, of a solenoid,41,

-- the pawl being provided with a spring, 42, to hold it in engagement with the ratchet, and

I the pawl arm, 38,

being provided with the retracting spring, 43. It will be understood that when the solenoid, 41, isenergized, the" core, 40, will move inwardly sufliciently to turn the ratchet wheel, 36,"one'-sixth of a revolution, thereby shifting the cams," 32,

-' with respect to the supporting rollers, 35,

and from one notch, as a, to the next adjae.

cent notch, as b, thereb lowering the frame, 29, and parts carried t ereby, including the light gate, a distance equal to the distance between-the centers of adjacent sound tracks,

and shifting the light gate from one soundtrack to the next. p

I rovide means whereby the reversal of the lm feed and the lowering of the frame, 29, occurs substantially simultaneously and automatically as soon as the sound track in alignment with the light gate has reached the gate, In this instance the film is provided beyond the sound tracks at each end of the same with a centrally located slot, 111', one of which is shown in Fig,

2. It will be understood that at the opposite end of the film and beyond the ends of thesound tracks there is another similar slot. On asuitable portion of the frame, as one of the bearing plates, of switches, as shown in Fig. 1. Each of ,these switches comprises a longitudinally movable spring actuated horizontal rod, 45, carrying a roller,

adapted to engage sprin contacts, 41 'when one of the slots, 111, is 'the roller, 46, thereby closing the circuit through the appropriate solenoid, 19, to shift the motor and reverse the feed' of the film,

and also through solenoid, 41,which is in series with each of the solenoids, "19, and simultaneously effecting the rotation of the shaft, 30, and thelowering of the frame, 29, to carry the light gate to the next adjacent sound track. I also provide a limit switch illustrated in detail in Fig. 6 comprising a fixed cont tendin shown in Fig. 1. -When rotated completely around'soas to bring the rollers, 35,-into engagement with the notches, f, of the cams, thus sound track. The next operation I of the appropriate switch rod, 45, in closing the circuit will effect a further movement of the cams, carrying the rollers,'35, over the pe-' ripheral portions between the notches, f, and

the rejecting portions,'34, and carrying one of t e projecting portions',-34, into engagement with the projection, switch, as in Fig. 50, 51, and brea ing the circuit through the motor, so that the device cannot be further operated until the cams, 32, have been rethe lastportion of 3, are mounted a pair act, 50, and a movable contact, 51, carried by an arm having a projection, 52, ex-

above one of the cams,.32, as best the cams have. been lowering the, light gate; into position to align it with the lowest 52, on the limit- 6, separating the contacts,'

46, at one end, which lightly engages the surface of the film. The posite end of the rod carries a contact, 45,

brought opposite to stored to the position shown in Fig. 2. This' can be readily done by the ratchet, 37, and

hand, by disengaging rotating the shaft, 30, by.

hand to thelef anysuitable means, as by f a handle, 52,'ind1cated in Fig. 3.

The' vertically movableframe, 29, is procentrally with a vertically disposed filmv in Fig's.1,"3,7,8and9., e

govided with a movable ob, 75, movable in the slot, 76, for swingguide which'su port son one side a removableplate carrymg'the li ht ate, as shown tel v d guilde compHSeS ,opposi y disposed, e p ate, 55,

and frame, 59-, supported by b? secured to the movable frame, 29. The film travels through slot, 56,- formed between plate, 55, and frame, 59, which areof greater vertical length than the width of the film.

Plate, 55, is provided with an aperture, in-

" dicated at 58, in Fig.v 8, adapted to r ster with the light gate and being slightlyor er than the gate. The frame, 59, is provid to i receive-a removable'plate, 60, provided with portions, 61, to engage frame, 59,

and he d plate, 60,"in-posit1on. The-plate,-

.60, is rovided with a lightgate, indicated at .62, w ich relgisters with the aperture, 58, in.

the film gui e when in position.- Iprefer to 'go' make the platei1 60, carrying the light ate,

removable, so t at a plurality of such plates having light gates of difie'rent lengt s or widths may be inserted in operative relation with the film guide. This is particularly del as sirable where the machine is used'both. for

recordin and reproducin sounds, as a gate of sli ht y greater lengt is "referred for 'reco than that which can e conveniently used for reproducing. If the machine is.

so used only for one purpose, obviously the light gate may be ermanently formed-in the film guide by su ituting a fixed plate in which a li ht gate has been formed, for

. frame, 59, an plate, 60.

I =86 At-one end of the. vertically m0vable frame, 29, ismounted alamp hood, indicated at 65, Provided with a lampsocket, 66', to receive a amp, indicated at 66, which may.

Y be a glow lamp it the machine isto be for recor 'ng sounds, or which may. be a 1'0- jection larn'p if the machine is tobe use for f reproducing sounds. The lamp hood is provided with the usual focusing tube, indicated 7 at 67, which has its axis in-hne with the' cen-' .45 ter of the light gate and itsouter end closely adjacent thereto. The opposite end of'the frame, 29,"is provided wltha socket indicated at 68, to receive a photo-electric cell, indicated at 70, which is used during the re.

'50 production of'sounds, and whichmay be removed when the machine is used for record- '1n'g.- A snitablejlens", .indicated at 69, may

' be employed between thelightgate and the hoto-electric' cell as shown, and supportedy a bracket,j71,;from the frame, 29. As indicatedin-Fi' 1, the machine is conv eniently provided with jack, 7 2, for the cona loud speaker or telephone receiver when the deviceis used for reproduc-l ing, and a similar jack, indicated. at 73, is I provided fonthe attachmentLof a micro-..

nection 0 .phone when the apparatus is used for record 74 re resents .a chain e o'ver switch and operated acket base, 57,

ing set, if desir 88, with movable contacts, 74 an ing the contacts hereafter referred to from a position to operate the machine as a reproducer to theposition required when the ma- ;ch ima isroperatedeforerecording.WI have also -necting the apparatus with the electric power supply lmeandthe speed control device, -7 9 or regulating the speed of the motor. These various parts may be of anyusual or des'ired'form. In Fi 10, I have illustrated awiring diaam'w ich may be briefly described as folows. 15 shows the motor connected b wires, 80, to the main line, 81, 81, from the source of ower when the ower switch, 7 8, is'closed, t e 8 ed control evice or rheostat being indicate at 79, and the limit switch in the motor circuit being indicated at 50, 51, in the motor circuit; The transformer for the lamp circuitis shown at 77 and the lamp socket is indicated at 66", having its contacts conne'ctedbywires, 82, 82, with the transformer thron h the fixed and movable contacts of the c ange-over switch which is indicated as a whole at 74. In a branch of the main power circuit, indicated by the wires,

83, 83, are located the solenoids, 19, 19, and

is connected-in such manner thatit will be energized whenever either of the solenoids,

electric cell, the termina s of which are con-;,

'nected by wires, 84, 84, with fixed contacts on the change-over switch, 74, and 72 re resents the jack of the loud speaker, whic is connected with fixed contacts on the changeover switch'b wires,.85,-85. 73 represents the j 'ack for t e microphone, also connected to fixed contacts on the changeover switch,

by wires, '86, 86. .90 represents an audio amgifying unit, which may be a special unit of own construction operating only in conjunction with this apparatus, orit may be unit of a radio receivt is connected by wires, 87, 87, with movable contacts, 74" and 74", of the change-over switch, which are adaptthe audio .amplifiyin 'ed to be connected with the fixed contacts leadin to the hoto-electric cell or to the mic op one, as t e case may be, and the ampli ying unit is also connected b wires, 88, 7 4, of the changeeover switch, which are adapted to be connected with fixed contacts leading to the loudspeaker jack, 72, or to contacts leading ,to the-lamp socket, 66", The audio amplitying. circuit may be provided with a varia le resistance, 91, or other suitable means for varyingthe volume of sound produced at the loud speaker or telephone receiver. The

19, 1s energized. 70 re resents the photo- 100 I change-over switch is also provided with movable contacts, 74 and 74, which in the switch are shown connected by a bar with the finger piece, 7 5, so that they may all be simultaneously swung from the reproducmg position to the recording position.

In the positions ofthe parts indicated in the diagram, it will be understood that the machine is' arranged for reproducing sounds by means of'the sound tracks onthe travelingfilm; Under such circumstances it will be understood that a projecting lamp is inserted in the socket, 66, and a photo-electric cell, 70, is connected through the movable 7 contacts,-74, 74 with the audio amplifier,

by wires, 87 {87 and thence by wires, 88, 88, and movable-contacts, 74 and 74",. wit wires, 85, 85, leading to the loud speaker jack, 72, to which will be connecte'd'either a loud speaker or atelep'hone receiver or head set, as desired. Assuming that ,a film' has been 'placedfinposition and'led from the containing reel-between the feed rolls,-

23, and their idle rolls, andconnected to a receiving reel in the usual manner,- when the .t-he uppermost of the parallel sound tracks,

and as the sound track (101) moves past main switch, 78,is closed, the motor, 15, will 4 be started, and the rojection lamp lighted."

' The film will be ed'past" the'light' gate,

' h through'the machine, and that the frame,

29,-will be loweredwhen each endof the;

which will-be in position to register w1t the light gate, thelight in variable degree W111 be projected to the photo-electric cell, produclng variations of current, which are transmittedthrough theaudio amplifier to the loud speaker or telcphone'receiver. The

"reproduction. of the sounds recorded on the sound track will be continued until-the end of the sound track passes the light gate,-

when. the appropriate slot, 111, will' be brought below the adjacent switch roller,

, 46, permitting the switch to'close and encrgize one of the solenoids, 19, and the solenoid, 41, reversing the'feed of the film and simultaneously rotating the cam shaft, so as to lower the frame'29, and bring the light gate into alignment with the second sound track, 102. 'The operation continues until each sound track has been passed before the light gate, as before described, when, if there are an even number of sound tracks the film will have been wound up upon thebriginal reel upon which it was-.carr1ed,a'nd the 1m operationv of. the cam shaft will open the limit switch, 5 0, 51, and stop the motor, and break the mam power circuit. The opera-.

tor will then open the main switch, 78, and by means of the handle, 52, or other sultable means return the cam shaft to its original position, raising .the frame, 29, to its highest position when the machine is in condition for further, operation with the same film or a different film. When it is desired to for the purpose of recording sounds change-over switch will be operated h swinging the button, 75, to the right Figs.-

use the apparatus ,72, and

switch to the movable contacts, 74, and. 74", thereof, thence .to the audio amplifier" through wires, 87,. 87, and by wires,.88, 88.,

to themovable contacts, 74,74 which will 1 then connect the fixed contacts, leading through wires, 82, 82, and 82 82, to the glow lamp, which will 0 erate' responsively' to the microphone circult, the transformer. being disconnected from the lamp circuit by the. movement of the movable contacts, 74',

74. In this position of the apparatusit is ready for recording sound vibrations im- 'pjrlessed upon the microphone in a well own way, it being understood in such case a-reel of unexposed sensitive photographic film will be fed back and forth,

film, which is provided with the slots, 111,. 111, engage theiappropriate switch rolls."

While the machine could be operated in the. dark, it will be understood that it will be no a lamp through. the light gate,-.from reaching 7 It will be understood that variations may be made in the specific construction ofthe apparatus hereinbefore; described without departing. from the spirit of my invention,

For example as illustrated in Fig. 11, I may provide the shaft, 114, of the motor,'115,'

with a friction wheel, 113, to engage alternately friction .wheels, 112, for driving the film feed mechanism, instead of using the worm and a wor'm wheel construction shown in Fig. 4, and-in casethere areundesirable fluctuations in the motor current, the motor shaft may be extended and'provided with a v gove'rno'r,findicated at diagrammatically illustrated in Fig, 1 1, of the well known phonograph type, to insure a prizetically constant speed of the motor under In Fig. 13, I have illustrated in the same manner a film which is'used for recording pu oses, which it will be noted is provide wit the same slots for effecting the reverse of movement of the feed mechanism, but upon which the sound tracks have not yet be'en recorded. I wish it to be understood, however, that I' do not. limit myself reversing means shown and described, it being only necessary that the film be provided 'at different distances from the axis thereof means for'said frame provided wit f p at 'difi'erent distances from the axis thereof f1 adjacent to each end of the portion occupied or'to be occupied by the parallel sound tracks, with means adapted to co-operate with devices connected with the reversing 'mechanism to bring the latter IIltCOPEIEUOlI when theeversal of movement of the film is de- 's1re What I claim and desire to secure by Letters Patent is:-"' I p V 1. In apparatus of the kind described, the combinat on with means for su porting and reversiblyfee'ding a film of a width to accommodate a plurality of sound tracks, a movablesupportin frame, larly to the fi and adjacent to one edge thereof, photo-electric sound transforming devices carried thereby, rotary sup orting:

means for saidframe provided wit faces to engage parts connected with said frame, and means for efiect' apartial rotation of said su feed of t e filmis reversed;

2. In apparatusof, the kind described, the combination with means foresupporting a film with its length extending horizontally and its faces verticall of a'horizontallydisframe, dispose per ndicularly to the a and adjacent to one e ge thereof, rotary, cams having portions at different distancesfromtheiraxes, for'supp'orting the frame,

photoelectric sound transforming devicescarried by said frame, and means for impartmg a partial rotation to said cams when the direction ofmovement of said film is reversed.

combinat on with means for supporting and reversibly feeding a of a width to accommlpldate ."a' pluralfity of sound tracks, a move esup orti' rame isposed perpendicularly to 51s fil r fi and adjacent'to one edge thereof, "photo-electric, sound transforming?- devices carried thereby, rotary su' faces o engage parts connected with said frame,

to the specific disposed perpendicuorting means when the direction of 2 including means for effecting a partial rotation of said sup rting means, to shift the osition of sa1 frame, and means carried y the film adjacent'to the opposite ends of the sound track receiving portion thereof said shifting means into operation.

for bringing 4. In apparatus of the kind described, the

combination with means for supporting a of sound tracks,- means for feeding the film in either direction, reversing means for said feeding means, amovable frame disposed perpendicularly to the film and adjacent to one edge thereof, photo-electric sound transforming devices carried by said frame, means for shifting said frame to align said devices with a different sound track portion thereof, and means carried by the film adjacent to each end of the sound track receiving portion thereof, for automatically bringing said feed reversing means and said frame shifting means into operation.

5.' In apparatus of the kind described, the combination with means for supportingand I reversibly feeding a film of a width tor accoinmodate a plurality'of sound tracks, a movable supporting frame, disposed 'perpendevices carried thereby, rotary supporting means for said frame provided withfaces at different distances from the axis thereof dicularly to the film and adjacent to one edge thereof, photo-electric sound transforming I to engage parts connected withsaid frame, electro-magnetic shifting mea for effecting a partial rotation of said supp rting means,

circuit controlling means for said shifting, means including a switch, having a part engaging the film. the film being /'provided at each end of the light track receiving portion thereof with means for engaging said switch P 1 .6'. In apparatus of the'kind described, the

combination with means for supporting and reversibly feeding a film of a width to accommodate a plurality of sound tracks, a movable supporting frame. disposed perpendicularly to the film and adjacent to one edge thereof, photo-electric sound transforming devices carried'thereby, rotary supportingemeans for said frame provided with'faces at different distances from theaxis thereof to engage parts connected with said frame, electromagnetic shifting'me'ansfor effecting apartial rotation of said supporting means, cir- 3. In apparatus of the kind described-,th cuit controlling means'for said shifting means i 'a switch having a part engaging the film, the film being provided at each end of the l ght trackreceiving portion thereof with anaperture to'engage said switch part Q'toeffect the operationof said switch.

either direction, reversing means for said ngcombinat on with means for supportinga 1:

film of a width to memora movable frame disposed feeding means,

to the film and adjacent to perpendicularly \one edge thereof, photo-electric sound transformin devices carried by said frame, means for shifting said frame to align said devices with a different sound track thereof,'said reversing and shifting means being electromagneticallv operated, a control switch for both of said reversing and shifting means,

having a part for engaging the film and held thereby in inoperative position, said film be-' ing provided at each end of its light track receiving portions withmeans for engaging said part and, operating said switc 8. In apparatus of the kind described, the combination with means for supporting a film of a width to accommodate a plurality of. sound tracks, means for feeding the film in either direction, reversing means for said feeding means, perpendicularly to the film and adjacent to one edge thereof, photo-electric sound transformin devices carried'by said frame, means for shi ting said frame to align said devices with a different sound track thereof, said reversing and shifting means being electromagnetically operated, a control switch for having a part for engaging-the film and held of sound tracks,aframe larly to the '40 devices carried by said frame, means for shifting member located both of said reversing and shifting means.

thereby in inoperative positiomsaid film being provided at each end {of its light track receiving portions with apertures for engaging said parttoefiecttheoperation of said switch.

9. In apparatus of the kind described, the combination with means film of a width toacommodate a plurality disposed perpendicufihn and adjacent to one edge thereof, photo-electric sound transforming a difierentl sou'nd track, feed rollers on opposite sides of said frame forfeeding the 1m in opposite directions respectively, a rotary driving member for each an electric motor provided with-a rotary between said driving memher and movable into engagement with either,

e'lectro-magnetic means ing means, having a part for engaging the film and operable thereby.

10, In apparatus ofthe combination with means film of a width to accommodate a plurality of sound tracks, a frame disposedperpendicularly to the film' and'adjacent to one edge thereof, photo-electric sound transforming devices carried by' said frame, means'for shifting said frame-to align said devices with adifferent sound track, feed rollers on opposite sides of said frame for feeding the film in opposite directions respectively, a rotary 1 a movable frame disposed for S pporting a said frame to align said devices with a v 1 site sides of said of said feedrollers,

for Shifting said rotary member to reverse the direction offeed' of'the film, controlling means for said shiftkind described, the for supporting a.

driving member for each of said feed rollers,

an electric motor provided with a rotary member located between said'dri'ving member ement with'either, or shifting said-rothe direction of fee devices carried by said frame, means for shifting said frame to align saiddevices with a different sound track, feed rollers on opposite sides of said frame for feeding the in opposite directions respectivel a rotary driving member for each'of said eed rollers,

.anelectric motor provided with a rotary member located between said driving member and movable into engagement-with either, op 0- sitely disposed electromagnetic devices or shifting said on opposite sides of said frame, each conrotary part, switches located nected with one of said electro-magnetic devices, and'having a art for engaging tripping meansacarrled y the film 12. Inapparatus of the'kind described, the combination with means for supporting a of sound tracks, a frame disposed perpendicularly'to the film and adjacent to one edge thereof, photo-electric sound transforming of a width to accommodate a plurality vdevices carried by said frame, means forshlfting said frameto align said devices with a different sound track, feed rollers on oppoin opposite; directions respectivel frame for feeding the film A a rotary :4 driving member for each of said eed rollers,

anelectric motor pivotally mounted and provided with a rotary-part located betweensaid driving members and adapted to be engaged with either, electro-magnetic means for swinging said motor on its pivot to shift the said rotarypart, andcontrolling-means for said elect'ro-ma etic means having a part for engaging the fi m and operable by a tripping portion thereof.

113; In apparatus of the kind described, the combination with means for supportin a film of a width to. accommodate a plura ity of sound tracks, a frame larly to the film and adjacent to one edge thereof, photo-electric sound transforming devicescarried by said frame, means for shifting said frame'to align said devices with disposed perpendicua difierent sound track, feed rollers on oppo- H site sides ofsaid frame for feeding the film in opposite directions respectively, a rotary 4 45 1 said frame, shifting means for said frame including 'rotar combination with means for supporting 1 a part for engaging the film and operable by l h tripping means carried thereby.

14. In apparatus'of the kind described, the dombination with means for supporting a film of a 'width to accommodate a plurality of sound tracks, a frame disposed perpendicularly to the film and adjacent to one edge thereof, photo-electric sound transforming devices carried by said frame, means for shifting said frame to align said devices with a different sound track, feed rollers on op 0- site sides of said frame for feeding the film "inopposite directions respectiveiy, a rotary driving member for each of said e ed rollers, an electric motor pivotally mounted and provided with a rotary part located between said driving members and ada tedto be engaged with either, oppositely isposed solenoids having movable cores connected with said motor, switches located on opposite sides of said frame, each'connected w th one, of said solenoids, each of said switches having a art engaging the film and holding it out 0 tion, and a film provided at each end of its track receiving portion with means for trip ping the film engagin parts of said switches. 15. In apparatus 0 the-kind described, the

a film of a width to accommodate a plura ity of sound tracks, means for feeding the film in either direction electro-magnetic means for reversing the irection of feed of said film, -aframe disposed erpendicularly to the film adjacent to once ge thereof, photoelectro 'sound transforming devices carried by supporting cams, having portions at di erentdistances from their common axis of rotation for engaging parts connected with said frame, electro-magnetic means for impart ng successive partial ro-- tary movements to said cam, stops on'said cams for limiting the rotary movement thereof, switch mechanism in circuit with said electro-magnetic shifting means and reversing gaging the film. 1 16. In apparatus of the kind described, the

,means, and having a trippingpart 'for encombination with. means for supporting ,a

film of a width to accommodate a plurality of'sound tracks, means for feeding'the film in either direction,- electro-magnetic means. for reversing the direction of feed of .said film, a frame disposed periendicularly to the adjacent to one edge t 'ereof, photo-elecf rollers, 1.

film adjacent to operatro sound transforming devices. carried by said frame, shifting means for said frame including rotary sup rting cams, having'pontions at different istances from their-common axis of rotation for engaging parts connected with said frame, electro magnetic means'for imparting sucessive partial rotary movement thereof, switches for controlling said reversing means and shifting means located on opposite sides of said frame, each aving atripping part for engaging the film, and a film provided adjacent to each'end of the track receiving portiomwith' an aperture for g g the tripping portion of one of said switches.

17. In apparatus of the kind described, the

combination with means for supporting a film of a width to accommodate a plurality of soundtracks, means for feeding the film in either direction, electro-magnetic means for reversing the direction of feed of said film, a framedisposed perpendicularly to the One edge thereof, photo-elem v tro sound transforming devices carried by said frame, shifting means for said frame including rotary supporting cams, having por-, tions at different distances fromtheir common axis of rotation for engaging parts conmeans for imparting successive- 'nected with said frame, electro-magnetic partial ro'- cams for limiting the rotary movement the'reof, switch mechanism in' circuit with said electro-magnetic shifting means and reversing means, and having a tripping part for enga ing the film,*and switc their rotary movement in one direction.

18. In apparatus of the kind described, the combination with means for supporting a film of a width to accommodate a plurality of 'sound tracks, means for feeding the film in either direction, electro-magnetic means for reversing the direction'of feed of said film, a frame disposed perpendicularly to the film adjacent to',one edge thereof, photo-ele'ctro sound transforming devices carried by said V shifting means for, said frame'i'nclud-- frame having portions ing rotary supporting cams,

at different distances from their common axisof "rotation for engaging 7 parts connected with said frame, electro-magnetic means for I imparting, successive partial rotary',.movements to said cam,.stops'on sa1d cams for v20 mechanism in ci'rcuit with said electro-maglimiting the rotary movement thereof, switch netic shifting means and reversing means, and having a tripping part for engaging the v and a master cut 'outswitch havin -a :movable' part in positiontobe engaged y one of the stops for limiting therotary moy ment of said cams in one directiom 19.- In apparatus a: the kind described, 1

combination'with means for supporting; I

film' ofa width toi aceommodate a plura m p a master cut out operable bysaid cams'at thelimit of tion,

combination with means forsupporting a film of a width to accommodate a plurality of of sound tracks, means for feeding the film in either direction, reversing means for said feeding means, a' movable frame disposed perpendicularly to the film and adjacent to one edge thereof, photo-electric sound transforming devices carried by said frame,means for shifting said frame to align said devices soundtracks, means for feeding the film in either direction, reversing means for said feeding means, a movable frame disposed perpendicularly to the film and adjacent to one edge thereof, photo-electric sound trans-' forming devices carried by said frame, means for shifting said frame to align said device with a different sound track portion thereof, a film provided adjacent to each end of the sound track receiving portion thereof, for

automatically bringing said feed reversing means and said shifting means into operation, a film guide carried by said frame, and

a removable plate provided with. a light gate detachably supported by said film guide, said film guide being provided with a late portion onthe opposite side of the lm from said plate, and having therein an-aperture larger than the light gate in said plate. I

21. In apparatus of the kind described, the

combination with means for supporting film of a width to accommodate a plum pendicularly to the film and adjacent to one edge thereof, photo-electric sound transforming devices carried by said frame,

' ringing sm 2. ity of sound tracks, a frame disposed per-- larly to the film and adjacent to one edge thereof, photo-electric sound transforming devices carried by said frame and including a source of illumination, focusing means, a photo-electric cell operatively connected with sound reproducing devices, means for shiftsaid focusing means ing said frame to align ortions of the with different sound track film, and a' film provided wit a plurality of parallel sound tracksextending alternately in oppositedirections and occupying substantially the entire width of the film, and having at each end of said sound track receiving 7 ortion tripping means for automatically feed reversing means and said frame shifting means into operation.

23. In apparatus of the kind described, the combination with means for supporting a film, means for feeding the film in either direction, reversing means for said feeding means, a movable frame disposed perpendicularly to the film and adjacent to one edge thereof, photo-electric sound transforming devices carried by saidframe' and including a source of illumination, focusing means, a photo-electric cell operatively connected with sound reproducing-devices, means for shifting said frame to align said focusing means with different sound track portions of the film, and a film provided wit a plurality of parallel sound tracks extending alternately in opposite directions and, occupging substantially the entire-width of the lm, and having portion tripping means, devices for automatically bringing said feed reversingmeans and said frame shifting means into operation, having tripping parts for engaging the film ortions thereof.

and operable by the trip ing In testimony whereo I a my signature. JOHN H. STEUREB'.

means for shifting said frame to align said devices with a different sound track,

I feed rollers on opposite sides of said frame for feeding the film in opposite directions respectively, a rotary driving member for each of said feed rollers, an electric motor pivotally mounted and provided with a rotary part located between said driving members and adapted to be engaged with either, electromagnetic means for swinging said motor on its pivot to shift the'said rotary part, and controllmg means for said electro-magnetic means having a part for engaging the film' and'operable by a tripping portion thereof{ and means for locking the motor in each its adjusted positions. 1 v a 22. In apparatus of the kind described, the

combination with means for supporting a film, means for feeding the film in either d1- 7 rection, reversin 'means -for saidfeeding means, a movable ame disposed perpendicuing at each end of said sound track receiv- 

